When does a 2.5 ton vehicle with a 4.6 liter 275 horsepower V8 get better than 26 miles per gallon on the highway? The Cadillac DeVille does just that. The Yamaha FZ1 weighs 5oo pounds, has a 1.0 liter in-line 4 and averages 45 miles per gallon. Need to ask which is more fun? Didn't think so.
